Process for preparing an unsaturated carboxylic acid salt

US10774024B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Schaub · Ludwigshafen, DE
• Rocco Paciello · Bad Dürkheim, DE
• Nuria Huguet Subiela · Ludwigshafen, DE
• Oliver Trapp · Dossenheim, DE
• Simone Manzini · Vercelli, IT

Key dates

• Filing date: Apr 4, 2017
• Grant date: Sep 15, 2020
• Expiry date: Apr 4, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C57/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a catalytic process for preparing an α,β-ethylenically unsaturated carboxylic acid salt, comprising contacting an alkene and carbon dioxide with a carboxylation catalyst being a transition metal complex, an alkoxide, and an organic solvent, to obtain an α,β-ethylenically unsaturated carboxylic acid salt, the organic solvent being incompletely miscible with water at a pressure of 1 bar at at least one temperature T and selected from amides and ureas, T being a temperature in the range from 10° C. to 90° C.